Food-preserving and like can.



W A. DAVIDSON. FOOD PRESBRVING AND LIKE CAN.

AIPLIOATIQN FILED SEPT. 8. 1914- Patented Feb. 9, 1915.

THE NORRIS PETERS CO PHOTO-LITHQ. WS/izrlfifiw wiL'LIAM ALEXANDERnnvrnson, or wIcK, sco'rLAnii;

FOOD-PRESERVING AND LIKE CAN,

Specification of Letters Patent.

Application filed. September 8, 1914. Serial No. 860,677.

To all whom it may concern Be it known that I, WILLIAM ALEXANDERDAVIDSON, a subject of the King of .Great Britain, residing at Wick,Scotland, have invented new' and useful Improvements in F ood-Preservingand like Cans, of which the following is a specification.

This invention relates to improvements in food preserving and like cans,of the kind in which the body portion is so shaped that when the lid isremoved no inwardly projecting rim or edge is left to prevent orobstruct the removal of the contents in an unbroken or entire condition,and the said invention also relates to cans of the kind comprising a lidsoldered to thebody and arranged so that it can be wound off on a key inthe known manner.

Now it has heretofore been proposed to so form the lid and body of a canthat between these parts an annular trough is formed in which a packingis lodged beneath a wire which is finally attached by solder to the lidand body, the packing preventing the solder from directly attaching thelid to the body.

According to the present invention, a packing is arranged between thecontents of the can and the joint along which the lid is soldered so asto prevent the solder or soldering flux from coming into contact withthe contents of the can, the rim of the body portion, or the lid of thecan being suitably shaped to receive this packing.

The accompanying drawing shows how the said invention may beconveniently and advantageously carried into practice.

In this drawing: Figure 1 is a plan view of the body of the improvedcan. Fig. 2 is a plan view of the lid thereof. Fig. 3 shows a centralvertical section of the can with the lid thereof secured to the canbody. Fig. 4 is a side elevation of the closed can. Fig. 5 is a view ofa key suitable for winding off the lid from the can body. Fig. 6 shows acentral vertical section of part of a modified constructional form ofthe improved can.

As shown in Figs. 1 and 3, the rim of the can body a is expanded andbeaded to provide an annular trough or recess 7) in which a packing cord0 waterproofed with wax, or other suitable material, is lodged. A liddwhich when the can is closed is seated on this waterproofed cord, isformed with a flat edge e, fitting within the rim of the can body andresting on the cord 0. Within the flat edge e of the lid d a bead f isprovided to form with the rim of the can body an annular channel toreceive solder g securing. the lid to the body. Preferably the partreceiving the packing cord 0, is enlarged at Patented Feb. 9, 1915. I

one part, as shown at h to allow the ends of the cord to be overlappedin the trough b so that it is not necessary to employ endless bandpackings. I As shown, the lid d is formed with a tongue 2' and the rimof the can body has a bent out part j above which the tongue i is placedwhen the lid is in position. This construction allows the part of thelid adj acent to the tongue 2' to be properly seated on the cord 0 fromwhich this part of the lid would otherwise be held away by the rim onthe outer side of the trough b holding the tongue 2' raised.

The bead 7 makes the lid more rigid than a flat lid and also insures aregular depth of the solder at the joint."

In use, after the can has been filled and a packing cord 0 placed in thetrough b the lid d is placed in position and, held pressed on to thesaid cord while the solder g is applied around the trough b. Thispacking prevents the solder g from coming into contact with the contentsof the can by flowing through the joint between the lid and the canbody. The under side of the tongue is also soldered to the bent-out partj of the rim.

By employing suitablesolder, the lid can be removed by means of a key issuch as is shown in Fig. 5, the tongue 21 being engaged in a slot Z inthe key which is then rotated and strips off the lid in the well knownmanner.

Instead of removing the whole lid, the latter may be made with a line ofweakness for example along the bead f, and the inner portion of the lidonly is then removed by the key but the aperture thus formed is shown inFig. 6, the can body a is made with an annular fiat surface m and anouter cylindrical flange n. The lid d7 has a bead 0 formed around itsperiphery. In this case the packing cord is placed in the bead o beforethe lid is applied to the can body. The lid when in position is securedby solder as hereinabove mentioned.

I claim 1. A food preserving can comprising a body portion having anoutwardly flared edge a lid extending partly over the said edge, anannular trough being formed adjacent to the joint between said edge andlid and having an enlargement, and a packing of waterproof cord lodgedin said trough and having overlapping ends lodged in said enlargement ofthe trough.

2. A food preserving can comprising a body having its mouth formed withan outceive overlapped ends of said cord, said ledge having an edgewhich is upturned except at -a point opposite to said enlargement, saidedge at said point being bent outwardly and a lid fitted within theupturned edge of the ledge and having a tongue extending outwardly andoverlying said outwardly bent portion of said edge.

WILLIAM ALEXANDER DAVIDSON. Witnesses:

LEROY W'ILBUR, FRED. M-IDDLELOR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner o1. Patents,

Washington, D. G.

